iPhone The iphone could not be updated because the firmware file is not compatible

[dj1891]

I am trying to downgrade from iOS 9 to 8.4.1 on my 5C as iOS 9 runs to sluggish but this is the error I get when trying to install manually through iTunes.

I have ugraded iTunes to latest version, tried different cables but same error. Any ideas?

 

[C DM]

Perhaps you are using an install file that is for a different device?

 

[vertsix]

Yeah, make sure you select the correct file for your device.